Design and Analysis of Linear Vibration Motor Equipped with Permanent-Magnet Springs and Voice-Coil Actuators

Choi, Jung-Kyu; Yoo, Seong-Yeon; Noh, Myounggyu

doi:10.3795/ksme-a.2013.37.3.359

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…The voltage equation of the motor is defined by Equation ( 4), where 𝑅 (ohm), {𝑖}, 𝐿 (mH), 𝑉 (V), 𝑉 (V), 𝑒, 𝜔 (rad/s) and 𝑡 (s) are coil DCR (direct current resistance), current vector, inductance, back electromotive force (back emf) vector, input voltage vector, Euler's number, angular frequency and time, respectively. Equation (5) expresses the relationship between the back emf, force factor and mechanical velocity. The vibration of the motor under Lorentz force is defined by Equation (6).…”

Section: Analysis Methodsmentioning

confidence: 99%

“…Equation (5) expresses the relationship between the back emf, force factor and mechanical velocity. The vibration of the motor under Lorentz force is defined by Equation (6).…”

Section: Analysis Methodsmentioning

confidence: 99%

“…Fukumoto et al used a small actuator attached to the backside of a touch panel to generate fast haptic feedback; the actuator is similar to a magnetic speaker that provides a linear motion of voice coil to reduce the response time and extend the lifetime [4]. Choi et al introduced a linear vibration motor, equipping a voice coil and permanent-magnet springs to increase the lifetime [5]. At that time, people were focusing on improving the response time and lifetime of rotational motors by using linear vibration motors, but not performance.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel Magnetic Circuit Design and Acceleration Calculation of Horizontal Linear Vibration Motor

Jiang

Park²,

Hwang

2022

Actuators

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This study proposes a novel magnetic circuit design to reduce the size of horizontal linear vibration motors (HLVMs) used in vehicle touchscreens. The HLVM prototype uses two thick permanent magnets to create a magnetic circuit below the voice coil; however, the novel design places four thin permanent magnets above and below the voice coil. Moreover, the coil position has been changed to a yoke center to create an effective magnetic circuit with short magnets. Compared with the vertical linear vibration motor, the force calculation method of the HLVM is significantly different. In this study, a new force calculation method is used to analyze the electromagnetic–mechanical coupling of the HLVM. As a prototype, the novel design is small in size (−28.85%) but possesses similar acceleration. The experimental results verify the analysis results of the HLVM in the displacement and acceleration on a dummy jig.

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Section: Analysis Methodsmentioning

confidence: 99%

“…Equation (5) expresses the relationship between the back emf, force factor and mechanical velocity. The vibration of the motor under Lorentz force is defined by Equation (6).…”

Section: Analysis Methodsmentioning

confidence: 99%